基于译码－转发的多中继合作分集系统的功率分配
doi: 10.3724/SP.J.1146.2006.01294
Power Allocation for Cooperative Diversity with Multi-relays Based on Decode-and-Forward
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摘要: 该文研究了衰落信道中基于译码－转发的多中继合作分集系统的功率分配问题。假设源节点有完全的信道状态信息，在总功率一定的条件下，以最小化系统的中断(outage)概率为目标，给出了如何选择中继节点以及如何在源节点和所选中继节点之间进行功率分配的算法。通过在任何时候最大化系统的瞬时容量来最小化系统的中断概率。仿真结果表明，该文提出的算法性能优于平均分配功率时系统的性能。
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关键词:
- 无线通信;发射分集;合作分集;功率分配
Abstract: This paper studies the power allocation problem in a cooperative diversity system with multi-relays based on decode-and-forward in fading channels. The system model assumes both the source and the destination have the complete Channel State Information (CSI). A relay selection and power allocation scheme is proposed to minimize the system outage probability by maximize the system capacity on each channel realization with power restraint. Simulation results verify the improved performance of the proposed method. -
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